Criminalistics

Study lessons

1. 1

   Dactyloscopy & forensic ballistics

   How fingerprints are classified under the Henry system and how fired bullets are matched to a firearm.

   15 min
2. 2

   Questioned documents, forensic chemistry & Locard

   A board-focused review of questioned-document examination, forensic chemistry and toxicology, polygraphy, and Locard's Exchange Principle.

   13 min
3. 3

   Forensic Photography

   Why crime scenes are photographed, the basic camera and light principles, the three standard shot ranges, and the special imaging that reveals hidden evidence.

   12 min
4. 4

   Polygraphy

   What the polygraph really records, the three physiological channels, how the test and its questions are built, its limitations, the pioneers, and its limited admissibility.

   12 min
5. 5

   Questioned Documents and Forensic Chemistry

   How examiners identify handwriting and expose forgery, and how the chemistry laboratory screens drugs, alcohol, poisons, gunshot residue, and arson accelerants.

   15 min
6. 6

   Forensic Medicine and DNA

   The signs of death and postmortem changes used to estimate time of death, how cause, mechanism, and manner differ, the main wound types, and the basics of forensic biology and DNA.

   15 min

Section practice test

4 test sets covering the whole Criminalistics section, 180 original questions with explanations. After you finish the lessons above, prove it here. Randomized every run.